Literary usage of Pillar box

Below you will find example usage of this term as found in modern and/or classical literature:

1.Heretics by Gilbert Keith Chesterton (1905)"pillar-box prosaic, because there is no rhyme to it. We think a pillar-box ...
A pillar-box is only called a pillar-box; it is a sanctuary of human words. ..."

2.The New Idealism by May Sinclair (1922)"The pillar box in Russell Square is ... it is not even the only pillar box, and
my sealing wax has its colour and my studio stove its shape; and again, ..."

3.The New Idealism by May Sinclair (1922)"The pillar box in Russell Square is not the only public servant in government
employ; it is not even the only pillar box, and my sealing wax has its colour ..."

4.A Treatise on Federal Criminal Law Procedure by William Hawley Atwell (1916)"... pillar box, lock box, lock drawer, or other receptacle established or approved
by the Postmaster-General for the safe deposit of matter for the mail or ..."